Robust identification of impact force acting on composite structures via a single FBG sensor using variational mode decomposition
Jian Huang, Xiaoming Yang, Quanxin Jiang, Li Zhang · 2026
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Description
Jian Huang and three colleagues present a method for finding impact forces on composite panels using a single sensor, in a 2026 paper. Impacts can damage aircraft-style structures invisibly, yet real working conditions bury the impact signal in noise and other loads. Their sensor is a fibre Bragg grating, a fibre-optic strain gauge.
The method first splits the noisy strain signal into clean vibration modes. A fingerprint drawn from those modes is matched against a precomputed map to locate the impact on a grid. A sparse calculation then rebuilds the force history over time. Tests on a composite plate shaped like a simplified airfoil located impacts at over 90 percent success, even with added harmonic and white noise. Force rebuilds were also accurate.
Catalog record
| CREATOR | Jian Huang, Xiaoming Yang, Quanxin Jiang, Li Zhang |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 47111 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |